:root {
  color-scheme: light;
  --bg: #f7f8f5;
  --panel: #ffffff;
  --text: #16201b;
  --muted: #59665f;
  --line: #d9dfd8;
  --accent: #176b5b;
  --accent-strong: #0d453b;
  --gold: #b88228;
  --shadow: 0 16px 40px rgba(22, 32, 27, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-strong);
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(217, 223, 216, 0.8);
  background: rgba(247, 248, 245, 0.92);
  backdrop-filter: blur(12px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, calc(100% - 32px));
  height: 68px;
  margin: 0 auto;
}

.brand {
  color: var(--text);
  font-size: 18px;
  font-weight: 800;
}

.nav-links {
  display: flex;
  gap: 24px;
  font-size: 14px;
  font-weight: 650;
}

.hero,
.section,
.footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 40px;
  align-items: center;
  min-height: calc(100vh - 68px);
  padding: 72px 0 56px;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(44px, 7vw, 88px);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-copy h1 span {
  display: block;
  margin-top: 12px;
  color: var(--accent);
  font-size: clamp(32px, 5vw, 60px);
}

.eyebrow,
.tag {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lead {
  max-width: 720px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  font-weight: 750;
}

.button.primary {
  background: var(--accent);
  color: white;
}

.button.secondary {
  background: transparent;
  color: var(--accent);
}

.profile-panel {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.profile-photo {
  display: block;
  width: 100%;
  max-height: 360px;
  margin-bottom: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  object-fit: cover;
  object-position: center;
  background: #eef1ed;
}

dl {
  display: grid;
  gap: 18px;
  margin: 0;
}

dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

dd {
  margin: 3px 0 0;
  font-weight: 650;
}

.section {
  padding: 76px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 88px;
}

.section-heading {
  display: grid;
  gap: 4px;
  margin-bottom: 28px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  gap: 34px;
  color: var(--muted);
  font-size: 17px;
}

.about-grid p {
  margin: 0;
}

.highlights {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text);
  font-weight: 650;
}

.highlights li {
  padding-left: 18px;
  border-left: 3px solid var(--accent);
}

.contribution-shell {
  display: grid;
  gap: 18px;
}

.contribution-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.contribution-tab {
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}

.contribution-tab.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.contribution-stack {
  position: relative;
  min-height: 680px;
}

.contribution-card {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1.08fr);
  gap: 28px;
  align-items: stretch;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px) scale(0.985);
  transition: opacity 180ms ease, transform 180ms ease;
}

.contribution-card.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.contribution-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: flex-start;
}

.contribution-copy h3 {
  margin: 0;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.12;
}

.contribution-copy > p:not(.tag) {
  margin: 18px 0 20px;
  color: var(--muted);
  font-size: 17px;
}

.contribution-copy > a {
  margin-top: auto;
  font-weight: 850;
}

.contribution-meta {
  width: 100%;
  gap: 12px;
  margin-bottom: 22px;
  padding-top: 6px;
}

.contribution-meta div {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.contribution-preview {
  position: relative;
  min-width: 0;
  margin: 0;
  padding: 0 22px 30px 0;
}

.image-stack {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 560px;
}

.stack-image {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 12px 30px rgba(22, 32, 27, 0.13);
  cursor: pointer;
  overflow: hidden;
  transform: translate(22px, 24px) scale(0.965);
  transition: transform 200ms ease, opacity 200ms ease, box-shadow 200ms ease;
  opacity: 0.74;
}

.stack-image.active {
  z-index: 2;
  opacity: 1;
  transform: translate(0, 0) scale(1);
  box-shadow: 0 18px 44px rgba(22, 32, 27, 0.17);
}

.stack-image:not(.active) {
  z-index: 1;
}

.stack-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: top center;
}

.contribution-preview figcaption {
  position: absolute;
  right: 24px;
  bottom: 0;
  left: 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-align: right;
}

.publication-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.publication {
  display: grid;
  align-content: start;
  min-height: 260px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.publication.featured {
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 20px;
}

.publication img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: #eef1ed;
}

.publication h3 {
  margin: 0;
  font-size: 19px;
  line-height: 1.28;
}

.publication p:not(.tag) {
  margin: 12px 0 18px;
  color: var(--muted);
}

.publication a {
  align-self: end;
  font-weight: 800;
}

.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.contact-grid a {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  font-weight: 750;
}

.footer {
  padding: 34px 0 48px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    height: auto;
    padding: 16px 0;
    flex-direction: column;
    gap: 10px;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 48px;
  }

  .about-grid,
  .publication-list,
  .publication.featured,
  .contribution-card {
    grid-template-columns: 1fr;
  }

  .contribution-stack {
    min-height: 860px;
  }

  .contribution-card {
    gap: 20px;
  }

  .image-stack {
    height: 420px;
    min-height: 420px;
  }

  .publication.featured img {
    max-width: 220px;
  }
}

@media (max-width: 520px) {
  .hero,
  .section,
  .footer {
    width: min(100% - 24px, 1120px);
  }

  .nav {
    width: min(100% - 24px, 1120px);
  }

  .lead {
    font-size: 17px;
  }

  .publication {
    padding: 18px;
  }

  .contribution-stack {
    min-height: 900px;
  }

  .contribution-card {
    padding: 18px;
  }

  .image-stack {
    height: 360px;
    min-height: 360px;
  }

  .stack-image {
    transform: translate(14px, 16px) scale(0.965);
  }
}